SELECT 
  * 
FROM 
  cscart_pc_payments

Query time 0.00358

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "0.85"
    },
    "table": {
      "table_name": "cscart_pc_payments",
      "access_type": "ALL",
      "rows_examined_per_scan": 6,
      "rows_produced_per_join": 6,
      "filtered": "100.00",
      "cost_info": {
        "read_cost": "0.25",
        "eval_cost": "0.60",
        "prefix_cost": "0.85",
        "data_read_per_join": "48"
      },
      "used_columns": [
        "payment_id",
        "cod",
        "prepaid"
      ]
    }
  }
}