Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0f2d33319ad3c4e10eef555c9d7beebdafdc65c6e8a571f382bc1da147d1b989' 
  AND token = '85zH6xiDCWgMNtY4cv2zFqQSKpGQfzp6WCvugByWmSA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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