SELECT 
  cscart_images.*, 
  cscart_images_links.*, 
  cscart_common_descriptions.description AS alt, 
  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 = 'M' 
  AND cscart_images_links.object_id IN (
    40818, 49865, 49873, 49871, 49869, 49875, 
    49874, 40824, 49882, 49879, 49877, 
    49878, 49880, 49881, 49888, 49889, 
    49890, 49895, 49897, 49899, 49901, 
    49903, 49905, 49906, 49908, 49910, 
    49914, 49916, 49918, 49917, 49924, 
    49929, 49920, 49921, 49922, 49923
  ) 
ORDER BY 
  cscart_images_links.position, 
  cscart_images_links.pair_id

Query time 0.00270

JSON explain

{
  "query_block": {
    "select_id": 1,
    "nested_loop": [
      {
        "read_sorted_file": {
          "filesort": {
            "sort_key": "cscart_images_links.position, cscart_images_links.pair_id",
            "table": {
              "table_name": "cscart_images_links",
              "access_type": "ALL",
              "possible_keys": ["object_id"],
              "rows": 110,
              "filtered": 32.72727203,
              "attached_condition": "cscart_images_links.object_type = 'product' and cscart_images_links.`type` = 'M' and cscart_images_links.object_id in (40818,49865,49873,49871,49869,49875,49874,40824,49882,49879,49877,49878,49880,49881,49888,49889,49890,49895,49897,49899,49901,49903,49905,49906,49908,49910,49914,49916,49918,49917,49924,49929,49920,49921,49922,49923)"
            }
          }
        }
      },
      {
        "table": {
          "table_name": "cscart_images",
          "access_type": "eq_ref",
          "possible_keys": ["PRIMARY"],
          "key": "PRIMARY",
          "key_length": "4",
          "used_key_parts": ["image_id"],
          "ref": ["dev_db.cscart_images_links.detailed_id"],
          "rows": 1,
          "filtered": 100
        }
      },
      {
        "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": ["dev_db.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))"
        }
      }
    ]
  }
}