UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'K08am842TWyKurzZbTGcz0cPVXswylb6A0VJfMNEaEo=' 
WHERE 
  key_id = '4750f7013cd8293f6909cb4a204042e327409c63e5859c9068814ff6844e5775' 
  AND (
    token = 'K08am842TWyKurzZbTGcz0cPVXswylb6A0VJfMNEaEo=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )