SELECT 
  * 
FROM 
  cscart_ab__so_noindex_tech_pages 
WHERE 
  company_id = 0 
  AND var = 'noindex' 
  AND value = 'Y'

Query time 0.01498

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "2689.15"
    },
    "table": {
      "table_name": "cscart_ab__so_noindex_tech_pages",
      "access_type": "ALL",
      "rows_examined_per_scan": 26649,
      "rows_produced_per_join": 26,
      "filtered": "0.10",
      "cost_info": {
        "read_cost": "2686.49",
        "eval_cost": "2.66",
        "prefix_cost": "2689.15",
        "data_read_per_join": "41K"
      },
      "used_columns": [
        "object_id",
        "company_id",
        "object_type",
        "var",
        "value"
      ],
      "attached_condition": "((`s2cart`.`cscart_ab__so_noindex_tech_pages`.`company_id` = 0) and (`s2cart`.`cscart_ab__so_noindex_tech_pages`.`var` = 'noindex') and (`s2cart`.`cscart_ab__so_noindex_tech_pages`.`value` = 'Y'))"
    }
  }
}