SELECT 
  cscart_images_links.*, 
  cscart_images.image_path, 
  cscart_common_descriptions.description AS alt, 
  cscart_images.image_x, 
  cscart_images.image_y, 
  cscart_images.image_id as images_image_id 
FROM 
  cscart_images_links 
  LEFT JOIN cscart_images ON cscart_images_links.detailed_id = cscart_images.image_id 
  LEFT JOIN cscart_common_descriptions ON cscart_common_descriptions.object_id = cscart_images.image_id 
  AND cscart_common_descriptions.object_holder = 'images' 
  AND cscart_common_descriptions.lang_code = 'en' 
WHERE 
  cscart_images_links.object_type = 'product' 
  AND cscart_images_links.type = 'A' 
  AND cscart_images_links.object_id = 64468 
ORDER BY 
  cscart_images_links.position, 
  cscart_images_links.pair_id

Query time 0.00043

JSON explain

{
  "query_block": {
    "select_id": 1,
    "read_sorted_file": {
      "filesort": {
        "sort_key": "cscart_images_links.position, cscart_images_links.pair_id",
        "table": {
          "table_name": "cscart_images_links",
          "access_type": "ref",
          "possible_keys": ["object_id"],
          "key": "object_id",
          "key_length": "81",
          "used_key_parts": ["object_id", "object_type", "type"],
          "ref": ["const", "const", "const"],
          "rows": 8,
          "filtered": 100,
          "index_condition": "cscart_images_links.object_type = 'product' and cscart_images_links.`type` = 'A'",
          "attached_condition": "cscart_images_links.object_id <=> 64468 and cscart_images_links.object_type <=> 'product' and cscart_images_links.`type` <=> 'A'"
        }
      }
    },
    "table": {
      "table_name": "cscart_images",
      "access_type": "eq_ref",
      "possible_keys": ["PRIMARY"],
      "key": "PRIMARY",
      "key_length": "3",
      "used_key_parts": ["image_id"],
      "ref": ["cscart_migrate.cscart_images_links.detailed_id"],
      "rows": 1,
      "filtered": 100,
      "attached_condition": "trigcond(cscart_images_links.detailed_id = cscart_images.image_id)"
    },
    "table": {
      "table_name": "cscart_common_descriptions",
      "access_type": "eq_ref",
      "possible_keys": ["PRIMARY"],
      "key": "PRIMARY",
      "key_length": "107",
      "used_key_parts": ["object_id", "lang_code", "object_holder"],
      "ref": ["cscart_migrate.cscart_images.image_id", "const", "const"],
      "rows": 1,
      "filtered": 100,
      "attached_condition": "trigcond(cscart_common_descriptions.object_id = cscart_images.image_id and cscart_common_descriptions.object_holder = 'images' and cscart_common_descriptions.lang_code = 'en' and trigcond(cscart_images.image_id is not null))"
    }
  }
}

Result

pair_id object_id object_type image_id detailed_id type position image_type show_gallery gallery_category_id image_path alt image_x image_y images_image_id
31190 64468 product 0 43423 A 0 D 0 0 Small-Galvanized-High-Lumen-Schoolhouse-Stem-Mount-Delphite-Double-Stripe.jpg Primary Schoolhouse LED, 975-Galvanized, Small Glass, Double Painted Band, 715-Delphite 1000 1000 43423
31193 64468 product 0 43426 A 1 D 0 0 Large-Navy-High-Lumen-Schoolhouse-stem-mount.jpg Primary Schoolhouse LED, Large Glass, No Painted Band 1000 1000 43426
31191 64468 product 0 43424 A 2 D 0 0 Large-Magenta-High-Lumen-Schoolhouse-stem-mount-Delphite-double-stripe.jpg Primary Schoolhouse LED, 490-Magenta, Large Glass, Double Painted Band, 715-Delphite 1000 1000 43424
31194 64468 product 0 43427 A 3 D 0 0 Small-Barn-Red-High-Lumen-Schoolhouse-Stem-Mount-Triple-Stripe.jpg Primary Schoolhouse LED, 400-Barn Red, Small Glass, Triple Painted Band, 400-Barn Red 1000 1000 43427
31195 64468 product 0 43428 A 3 D 0 0 Large-Galvanized-High-Lumen-Schoolhouse-stem-mount-Jadite-solid-stripe.jpg Primary Schoolhouse LED, 975-Galvanized, Large Glass, Single Painted Band, 311-Jadite 1000 1000 43428
31192 64468 product 0 43425 A 4 D 0 0 Small-Black-High-Lumen-Schoolhouse-Stem-Mount-Solid-Stripe.jpg Primary Schoolhouse LED, 100-Black, Small Glass, Single Painted Band, 100-Black 1000 1000 43425
64914 64468 product 0 77147 A 4 C 0 0 IMG_1967-commercial-interior-lighting-library-Primary-Schoolhouse-High-Lumen-LED-Stem-Large-Opaque-615-Oil-Rubbed-Bronze-24in-stem.jpg Primary Schoolhouse LED, Large Opaque, 615-Oil Rubbed Bronze, 24" Stem 1907 1431 77147
64915 64468 product 0 77148 A 4 C 0 0 IMG_1966-commercial-interior-lighting-library-Primary-Schoolhouse-High-Lumen-LED-Stem-Large-Opaque-615-Oil-Rubbed-Bronze-24in-stem.jpg Primary Schoolhouse LED, Large Opaque, 615-Oil Rubbed Bronze, 24" Stem 2007 1257 77148