SELECT 
  storetimezone 
FROM 
  cscart_crm_livechatcompanyref 
WHERE 
  company_id = 1

Query time 0.00070

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "2.23"
    },
    "table": {
      "table_name": "cscart_crm_livechatcompanyref",
      "access_type": "ALL",
      "rows_examined_per_scan": 17,
      "rows_produced_per_join": 1,
      "filtered": "10.00",
      "cost_info": {
        "read_cost": "2.06",
        "eval_cost": "0.17",
        "prefix_cost": "2.23",
        "data_read_per_join": "1K"
      },
      "used_columns": [
        "storetimezone",
        "company_id"
      ],
      "attached_condition": "(`poscentr_upgrade422`.`cscart_crm_livechatcompanyref`.`company_id` = 1)"
    }
  }
}