SELECT 
  cscart_ab__video_gallery_descriptions.video_path, 
  videos.video_id, 
  videos.product_id, 
  videos.status, 
  videos.pos, 
  videos.type, 
  videos.settings, 
  videos.icon_type, 
  cscart_ab__video_gallery_descriptions.title, 
  cscart_ab__video_gallery_descriptions.description 
FROM 
  cscart_ab__video_gallery AS videos 
  LEFT JOIN cscart_ab__video_gallery_descriptions ON cscart_ab__video_gallery_descriptions.video_id = videos.video_id 
  AND cscart_ab__video_gallery_descriptions.lang_code = 'en' 
WHERE 
  1 
  AND videos.status = 'A' 
  AND videos.product_id = 15120 
ORDER BY 
  videos.pos ASC

Query time 0.00050

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "0.70"
    },
    "ordering_operation": {
      "using_filesort": true,
      "nested_loop": [
        {
          "table": {
            "table_name": "videos",
            "access_type": "ref",
            "possible_keys": [
              "status",
              "product_id"
            ],
            "key": "status",
            "used_key_parts": [
              "status"
            ],
            "key_length": "3",
            "ref": [
              "const"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 1,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "0.25",
              "eval_cost": "0.10",
              "prefix_cost": "0.35",
              "data_read_per_join": "80"
            },
            "used_columns": [
              "video_id",
              "type",
              "product_id",
              "pos",
              "status",
              "icon_type",
              "settings"
            ],
            "attached_condition": "(`dev_yourmart_co_bw`.`videos`.`product_id` = 15120)"
          }
        },
        {
          "table": {
            "table_name": "cscart_ab__video_gallery_descriptions",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "video_id",
              "lang_code"
            ],
            "key_length": "9",
            "ref": [
              "dev_yourmart_co_bw.videos.video_id",
              "const"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 1,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "0.25",
              "eval_cost": "0.10",
              "prefix_cost": "0.70",
              "data_read_per_join": "1K"
            },
            "used_columns": [
              "video_id",
              "video_path",
              "title",
              "description",
              "lang_code"
            ]
          }
        }
      ]
    }
  }
}