SELECT 
  * 
FROM 
  cscart_ec_delivery_date 
WHERE 
  company_id = 40

Query time 0.00022

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "1.46"
    },
    "table": {
      "table_name": "cscart_ec_delivery_date",
      "access_type": "ALL",
      "rows_examined_per_scan": 9,
      "rows_produced_per_join": 1,
      "filtered": "11.11",
      "cost_info": {
        "read_cost": "1.36",
        "eval_cost": "0.10",
        "prefix_cost": "1.46",
        "data_read_per_join": "12K"
      },
      "used_columns": [
        "id",
        "delivery_date",
        "processing_times",
        "unavailable_days",
        "delivery_time_slot",
        "exception_week_days",
        "time_required",
        "date_required",
        "company_id"
      ],
      "attached_condition": "(`wearethehelpful_scalesta_net`.`cscart_ec_delivery_date`.`company_id` = 40)"
    }
  }
}