SELECT 
  * 
FROM 
  cscart_abt__ut2_settings 
WHERE 
  lang_code = 'en'

Query time 0.00046

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "24.60"
    },
    "table": {
      "table_name": "cscart_abt__ut2_settings",
      "access_type": "ALL",
      "rows_examined_per_scan": 118,
      "rows_produced_per_join": 11,
      "filtered": "10.00",
      "cost_info": {
        "read_cost": "22.24",
        "eval_cost": "2.36",
        "prefix_cost": "24.60",
        "data_read_per_join": "7K"
      },
      "used_columns": [
        "section",
        "name",
        "company_id",
        "lang_code",
        "value"
      ],
      "attached_condition": "(`webmarco`.`cscart_abt__ut2_settings`.`lang_code` = 'en')"
    }
  }
}