SELECT 
  * 
FROM 
  cscart_points_and_cash_settings

Query time 0.00027

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "0.35"
    },
    "table": {
      "table_name": "cscart_points_and_cash_settings",
      "access_type": "ALL",
      "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": "5K"
      },
      "used_columns": [
        "enable_points_for_cart",
        "enable_points_for_catalog",
        "enable_points_for_list_price",
        "setting_percentage_of_total",
        "points_for_registration",
        "points_for_review",
        "points_for_review_image",
        "points_for_review_post",
        "points_for_review_rating",
        "pay_entire_order_with_points",
        "default_percentage",
        "use_day_setting_1",
        "day_setting_1",
        "time_from_day_setting_1",
        "time_to_day_setting_1",
        "percentage_of_total_day_setting_1",
        "use_day_setting_2",
        "day_setting_2",
        "time_from_day_setting_2",
        "time_to_day_setting_2",
        "percentage_of_total_day_setting_2",
        "use_period_setting_1",
        "date_from_period_setting_1",
        "date_to_period_setting_1",
        "time_from_period_setting_1",
        "time_to_period_setting_1",
        "percentage_of_total_period_setting_1",
        "use_period_setting_2",
        "date_from_period_setting_2",
        "date_to_period_setting_2",
        "time_from_period_setting_2",
        "time_to_period_setting_2",
        "percentage_of_total_period_setting_2",
        "cron_pass"
      ]
    }
  }
}