SELECT 
  * 
FROM 
  cscart_ec_webtoprint 
WHERE 
  product_id = 54

Query time 0.00023

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "3.38"
    },
    "table": {
      "table_name": "cscart_ec_webtoprint",
      "access_type": "ALL",
      "rows_examined_per_scan": 6,
      "rows_produced_per_join": 1,
      "filtered": "16.67",
      "cost_info": {
        "read_cost": "3.18",
        "eval_cost": "0.20",
        "prefix_cost": "3.38",
        "data_read_per_join": "32"
      },
      "used_columns": [
        "id",
        "timestamp",
        "status",
        "product_id",
        "printarea",
        "required"
      ],
      "attached_condition": "(`satishecarter_march_001`.`cscart_ec_webtoprint`.`product_id` = 54)"
    }
  }
}