SELECT 
  video_id 
FROM 
  cscart_cp_video_product_links 
WHERE 
  product_id IN (65546) 
  AND type = 'T' 
ORDER BY 
  position

Query time 0.00032

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "1.55"
    },
    "ordering_operation": {
      "using_filesort": false,
      "table": {
        "table_name": "cscart_cp_video_product_links",
        "access_type": "range",
        "possible_keys": [
          "PRIMARY",
          "position",
          "idx_product_type_position"
        ],
        "key": "idx_product_type_position",
        "used_key_parts": [
          "product_id",
          "type"
        ],
        "key_length": "9",
        "rows_examined_per_scan": 13,
        "rows_produced_per_join": 1,
        "filtered": "100.00",
        "using_index": true,
        "cost_info": {
          "read_cost": "0.25",
          "eval_cost": "0.13",
          "prefix_cost": "1.55",
          "data_read_per_join": "31"
        },
        "used_columns": [
          "video_id",
          "product_id",
          "type",
          "position"
        ],
        "attached_condition": "((`cscart_db`.`cscart_cp_video_product_links`.`product_id` = 65546) and (`cscart_db`.`cscart_cp_video_product_links`.`type` = 'T'))"
      }
    }
  }
}