UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'yJtnKfQuLGGkV8xA+w+Bnw+QCkJNZzInvLZdADMyU0E=' 
WHERE 
  key_id = 'a1b83903671b5c4726327e0467225597b72ab85c4768806df593196e3cddff71' 
  AND (
    token = 'yJtnKfQuLGGkV8xA+w+Bnw+QCkJNZzInvLZdADMyU0E=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )