SELECT 
  o.option_id as id, 
  i.option_name as name, 
  i.description, 
  i.comment, 
  o.status, 
  o.position, 
  o.alt_name, 
  o.design_file_attachment_id, 
  o.sku_column, 
  o.is_master_option, 
  o.base_variant_id, 
  o.variant_style, 
  o.variant_block_size, 
  o.variant_text_size, 
  o.variant_text_location, 
  o.variant_vertical_spacing, 
  o.visibility, 
  (
    select 
      1
  ) as is_global 
FROM 
  cscart_product_global_option_links as g 
  INNER JOIN cscart_product_options as o 
  INNER JOIN cscart_product_options_descriptions as i 
  INNER JOIN cscart_products as p ON g.option_id = o.option_id 
  AND g.product_id = p.product_id 
  AND g.option_id = i.option_id 
WHERE 
  g.product_id = 65965 
ORDER BY 
  name ASC

Query time 0.00082

JSON explain

{
  "query_block": {
    "select_id": 1,
    "filesort": {
      "sort_key": "i.option_name",
      "temporary_table": {
        "table": {
          "table_name": "p",
          "access_type": "const",
          "possible_keys": ["PRIMARY"],
          "key": "PRIMARY",
          "key_length": "3",
          "used_key_parts": ["product_id"],
          "ref": ["const"],
          "rows": 1,
          "filtered": 100,
          "using_index": true
        },
        "table": {
          "table_name": "g",
          "access_type": "ref",
          "possible_keys": ["PRIMARY", "product_id"],
          "key": "product_id",
          "key_length": "3",
          "used_key_parts": ["product_id"],
          "ref": ["const"],
          "rows": 9,
          "filtered": 100,
          "using_index": true
        },
        "table": {
          "table_name": "o",
          "access_type": "eq_ref",
          "possible_keys": ["PRIMARY"],
          "key": "PRIMARY",
          "key_length": "3",
          "used_key_parts": ["option_id"],
          "ref": ["cscart_migrate.g.option_id"],
          "rows": 1,
          "filtered": 100
        },
        "table": {
          "table_name": "i",
          "access_type": "ref",
          "possible_keys": ["PRIMARY"],
          "key": "PRIMARY",
          "key_length": "3",
          "used_key_parts": ["option_id"],
          "ref": ["cscart_migrate.g.option_id"],
          "rows": 1,
          "filtered": 100
        }
      }
    }
  }
}

Result

id name description comment status position alt_name design_file_attachment_id sku_column is_master_option base_variant_id variant_style variant_block_size variant_text_size variant_text_location variant_vertical_spacing visibility is_global
22631 Ceiling Canopy Finish A 30 (NEW) Ceiling Canopy Finish - PC & Limited PTMP - NO SAS 0 5 0 0 0 1 0 o 0 1
23900 Cord & Cable Length A 19 (NEW) Cord & Cable Length - Studio (3 Lengths) 0 3 0 0 1 1 0 i 0 1
21943 Cords View Cord Design File A 15 (NEW) Cords 0 3 0 0 0 1 8 o 0 1
24012 Exterior Finish View Design File A 10 (NEW!) Finishes - Powder Coat (Exterior Isos) 21352 2 0 0 0 2 0 o 0 {} 1
24013 Interior Finish View Design File A 11 (NEW!) Finishes - Powder Coat (Interior Isos) 21352 3 0 0 0 2 0 o 0 {"1":{"type":"ANY","items":[["24012","244285"],["24012","244306"],["24012","244302"],["24012","244303"],["24012","244316"],["24012","244304"],["24012","244317"],["24012","244305"],["24012","244320"],["24012","244300"],["24012","244321"],["24012","244307"],["24012","244308"],["24012","244309"],["24012","244322"],["24012","244318"],["24012","244301"],["24012","244299"],["24012","244286"],["24012","244290"],["24012","244312"],["24012","244287"],["24012","244313"],["24012","244288"],["24012","244289"],["24012","244319"],["24012","244314"],["24012","244291"],["24012","244298"],["24012","244292"],["24012","244293"],["24012","244294"],["24012","244315"],["24012","244295"],["24012","244296"],["24012","244297"]]}} 1
22934 Light Source A 0 (NEW) Light Source 0 0 1 0 1 1 0 i 0 1
24027 Shade Size A 2 (NEW!) Shade Size - Isos (fixed) 0 1 0 0 0 1 0 o 0 1
21941 Socket Type A 55 (NEW) Socket Type - GU24 0 11 0 0 0 1 0 o 0 1
24016 Top Cover Finish A 20 (NEW) Top Cover Finish - Isos 0 5 0 0 0 1 0 o 0 1