Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '01cb6fb53e13cba335ee2a62e9de296bf8f373874df66365a61400638dc34400' 
  AND token = 'SsvZY4sumGn0hMynSf0WCXORE/w+M9HZkZZi5VxIgJs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}