Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65f747f9ea050f66a0e8096c41a3297263bf0ff3e72f027475101386980193ab' 
  AND token = 'WVSpxejE19dJZ5tmGYspDI2Wphjj4hxDJlielnnRLeY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}