UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'dnex8+BxQrqQc6ZXDCYtWjboFWlMs4TPznzBA2ELKMA=' 
WHERE 
  key_id = '3c261168acd73b42a76a6329f6c4758576c9ffa4fa32258a8cbc405fdcae3783' 
  AND (
    token = 'dnex8+BxQrqQc6ZXDCYtWjboFWlMs4TPznzBA2ELKMA=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )