SELECT 
  q_images.*, 
  q_images_links.*, 
  q_common_descriptions.description AS alt, 
  q_images.image_id AS images_image_id 
FROM 
  q_images_links 
  LEFT JOIN q_images ON q_images_links.image_id = q_images.image_id 
  LEFT JOIN q_common_descriptions ON q_common_descriptions.object_id = q_images.image_id 
  AND q_common_descriptions.object_holder = 'images' 
  AND q_common_descriptions.lang_code = 'en' 
WHERE 
  q_images_links.object_type = 'product' 
  AND q_images_links.type = 'M' 
  AND q_images_links.object_id IN (
    '6934', '6935', '6936', '6937', '6938', 
    '6939', '6940', '6941', '6942', '6943', 
    '6944', '6945', '6946', '6947', '6948', 
    '6949'
  ) 
ORDER BY 
  q_images_links.position, 
  q_images_links.pair_id

Query time 0.00100

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "92.81"
    },
    "ordering_operation": {
      "using_filesort": true,
      "cost_info": {
        "sort_cost": "16.00"
      },
      "nested_loop": [
        {
          "table": {
            "table_name": "q_images_links",
            "access_type": "range",
            "possible_keys": [
              "object_id"
            ],
            "key": "object_id",
            "used_key_parts": [
              "object_id",
              "object_type",
              "type"
            ],
            "key_length": "81",
            "rows_examined_per_scan": 16,
            "rows_produced_per_join": 16,
            "filtered": "100.00",
            "index_condition": "((`portal`.`q_images_links`.`object_type` = 'product') and (`portal`.`q_images_links`.`type` = 'M') and (`portal`.`q_images_links`.`object_id` in ('6934','6935','6936','6937','6938','6939','6940','6941','6942','6943','6944','6945','6946','6947','6948','6949')))",
            "cost_info": {
              "read_cost": "35.21",
              "eval_cost": "3.20",
              "prefix_cost": "38.41",
              "data_read_per_join": "1K"
            },
            "used_columns": [
              "pair_id",
              "object_id",
              "object_type",
              "image_id",
              "detailed_id",
              "type",
              "position"
            ]
          }
        },
        {
          "table": {
            "table_name": "q_images",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "image_id"
            ],
            "key_length": "4",
            "ref": [
              "portal.q_images_links.image_id"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 16,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "16.00",
              "eval_cost": "3.20",
              "prefix_cost": "57.61",
              "data_read_per_join": "12K"
            },
            "used_columns": [
              "image_id",
              "image_path",
              "image_x",
              "image_y",
              "is_high_res"
            ]
          }
        },
        {
          "table": {
            "table_name": "q_common_descriptions",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "object_id",
              "lang_code",
              "object_holder"
            ],
            "key_length": "107",
            "ref": [
              "portal.q_images.image_id",
              "const",
              "const"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 16,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "16.00",
              "eval_cost": "3.20",
              "prefix_cost": "76.81",
              "data_read_per_join": "9K"
            },
            "used_columns": [
              "object_id",
              "description",
              "lang_code",
              "object_holder"
            ],
            "attached_condition": "<if>(is_not_null_compl(q_common_descriptions), (`portal`.`q_common_descriptions`.`object_id` = `portal`.`q_images`.`image_id`), true)"
          }
        }
      ]
    }
  }
}