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 (
    49761, 49756, 49769, 49768, 49763, 49766, 
    49767, 49764, 49765, 49762, 49773, 
    49758, 49772, 49775, 49776, 49774, 
    49771, 49770, 49757, 49778, 49759, 
    49777, 49783, 49784, 49760, 49782
  ) 
ORDER BY 
  cscart_images_links.position, 
  cscart_images_links.pair_id

Query time 0.00203

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": 23.63636398,
              "attached_condition": "cscart_images_links.object_type = 'product' and cscart_images_links.`type` = 'M' and cscart_images_links.object_id in (49761,49756,49769,49768,49763,49766,49767,49764,49765,49762,49773,49758,49772,49775,49776,49774,49771,49770,49757,49778,49759,49777,49783,49784,49760,49782)"
            }
          }
        }
      },
      {
        "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))"
        }
      }
    ]
  }
}