SELECT 
  video_id, 
  product_id 
FROM 
  q_ab__video_gallery 
WHERE 
  product_id IN (
    13628, 15598, 15644, 15645, 15647, 15648, 
    15650, 15651, 15724, 16047, 16312, 
    16313, 16314, 16315, 16316, 16317, 
    16318, 16319, 16320, 16323, 16324
  )

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "9.42"
    },
    "table": {
      "table_name": "q_ab__video_gallery",
      "access_type": "range",
      "possible_keys": [
        "product_id"
      ],
      "key": "product_id",
      "used_key_parts": [
        "product_id"
      ],
      "key_length": "3",
      "rows_examined_per_scan": 21,
      "rows_produced_per_join": 21,
      "filtered": "100.00",
      "using_index": true,
      "cost_info": {
        "read_cost": "5.22",
        "eval_cost": "4.20",
        "prefix_cost": "9.42",
        "data_read_per_join": "1K"
      },
      "used_columns": [
        "video_id",
        "product_id"
      ],
      "attached_condition": "(`portal`.`q_ab__video_gallery`.`product_id` in (13628,15598,15644,15645,15647,15648,15650,15651,15724,16047,16312,16313,16314,16315,16316,16317,16318,16319,16320,16323,16324))"
    }
  }
}