SELECT 
  pf.feature_id, 
  pf.company_id, 
  pf.feature_type, 
  pf.parent_id, 
  pf.display_on_product, 
  pf.display_on_catalog, 
  pf.display_on_header, 
  cscart_product_features_descriptions.description, 
  cscart_product_features_descriptions.lang_code, 
  cscart_product_features_descriptions.prefix, 
  cscart_product_features_descriptions.suffix, 
  pf.categories_path, 
  cscart_product_features_descriptions.full_description, 
  pf.status, 
  pf.comparison, 
  pf.position, 
  groups.position AS group_position, 
  cscart_product_features_values.value, 
  cscart_product_features_values.variant_id, 
  cscart_product_features_values.value_int 
FROM 
  cscart_product_features AS pf 
  LEFT JOIN cscart_product_features AS groups ON pf.parent_id = groups.feature_id 
  LEFT JOIN cscart_product_features_descriptions ON cscart_product_features_descriptions.feature_id = pf.feature_id 
  AND cscart_product_features_descriptions.lang_code = 'en' 
  INNER JOIN cscart_product_features_values ON cscart_product_features_values.feature_id = pf.feature_id 
  AND cscart_product_features_values.product_id = 65770 
  AND cscart_product_features_values.lang_code = 'en' 
  INNER JOIN cscart_ult_objects_sharing ON (
    cscart_ult_objects_sharing.share_object_id = pf.feature_id 
    AND cscart_ult_objects_sharing.share_company_id = 1 
    AND cscart_ult_objects_sharing.share_object_type = 'product_features'
  ) 
WHERE 
  1 
  AND pf.feature_type != 'G' 
  AND pf.status IN ('A') 
  AND pf.display_on_product = 'Y' 
  AND (
    pf.categories_path = '' 
    OR ISNULL(pf.categories_path) 
    OR FIND_IN_SET(1669, pf.categories_path) 
    OR FIND_IN_SET(1699, pf.categories_path) 
    OR FIND_IN_SET(1703, pf.categories_path) 
    OR FIND_IN_SET(1831, pf.categories_path) 
    OR FIND_IN_SET(1832, pf.categories_path) 
    OR FIND_IN_SET(1887, pf.categories_path) 
    OR FIND_IN_SET(1877, pf.categories_path) 
    OR FIND_IN_SET(1878, pf.categories_path) 
    OR FIND_IN_SET(1888, pf.categories_path) 
    OR FIND_IN_SET(1892, pf.categories_path) 
    OR FIND_IN_SET(1896, pf.categories_path) 
    OR FIND_IN_SET(1899, pf.categories_path) 
    OR FIND_IN_SET(1792, pf.categories_path) 
    OR FIND_IN_SET(1979, pf.categories_path) 
    OR FIND_IN_SET(2002, pf.categories_path)
  ) 
GROUP BY 
  pf.feature_id 
ORDER BY 
  group_position, 
  pf.position, 
  cscart_product_features_descriptions.description

Query time 0.00124

JSON explain

{
  "query_block": {
    "select_id": 1,
    "filesort": {
      "sort_key": "groups.position, pf.position, cscart_product_features_descriptions.description",
      "temporary_table": {
        "table": {
          "table_name": "cscart_product_features_values",
          "access_type": "ref",
          "possible_keys": ["PRIMARY", "fl", "lang_code", "product_id", "fpl"],
          "key": "product_id",
          "key_length": "3",
          "used_key_parts": ["product_id"],
          "ref": ["const"],
          "rows": 12,
          "filtered": 99.92422485,
          "attached_condition": "cscart_product_features_values.product_id <=> 65770 and cscart_product_features_values.lang_code = 'en'"
        },
        "table": {
          "table_name": "pf",
          "access_type": "eq_ref",
          "possible_keys": ["PRIMARY", "status"],
          "key": "PRIMARY",
          "key_length": "3",
          "used_key_parts": ["feature_id"],
          "ref": ["cscart_migrate.cscart_product_features_values.feature_id"],
          "rows": 1,
          "filtered": 97.67441559,
          "attached_condition": "pf.feature_type <> 'G' and pf.`status` = 'A' and pf.display_on_product = 'Y' and (pf.categories_path = '' or pf.categories_path is null or find_in_set(1669,pf.categories_path) or find_in_set(1699,pf.categories_path) or find_in_set(1703,pf.categories_path) or find_in_set(1831,pf.categories_path) or find_in_set(1832,pf.categories_path) or find_in_set(1887,pf.categories_path) or find_in_set(1877,pf.categories_path) or find_in_set(1878,pf.categories_path) or find_in_set(1888,pf.categories_path) or find_in_set(1892,pf.categories_path) or find_in_set(1896,pf.categories_path) or find_in_set(1899,pf.categories_path) or find_in_set(1792,pf.categories_path) or find_in_set(1979,pf.categories_path) or find_in_set(2002,pf.categories_path))"
        },
        "table": {
          "table_name": "groups",
          "access_type": "eq_ref",
          "possible_keys": ["PRIMARY"],
          "key": "PRIMARY",
          "key_length": "3",
          "used_key_parts": ["feature_id"],
          "ref": ["cscart_migrate.pf.parent_id"],
          "rows": 1,
          "filtered": 100
        },
        "table": {
          "table_name": "cscart_product_features_descriptions",
          "access_type": "eq_ref",
          "possible_keys": ["PRIMARY"],
          "key": "PRIMARY",
          "key_length": "9",
          "used_key_parts": ["feature_id", "lang_code"],
          "ref": [
            "cscart_migrate.cscart_product_features_values.feature_id",
            "const"
          ],
          "rows": 1,
          "filtered": 100,
          "attached_condition": "trigcond(cscart_product_features_descriptions.lang_code = 'en')"
        },
        "table": {
          "table_name": "cscart_ult_objects_sharing",
          "access_type": "eq_ref",
          "possible_keys": ["PRIMARY"],
          "key": "PRIMARY",
          "key_length": "159",
          "used_key_parts": [
            "share_object_id",
            "share_company_id",
            "share_object_type"
          ],
          "ref": [
            "cscart_migrate.cscart_product_features_values.feature_id",
            "const",
            "const"
          ],
          "rows": 1,
          "filtered": 100,
          "attached_condition": "cscart_ult_objects_sharing.share_object_id = cscart_product_features_values.feature_id and cscart_ult_objects_sharing.share_object_type = 'product_features'",
          "using_index": true
        }
      }
    }
  }
}

Result