UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '6cTzy7lM79dXjGoQInbaiOgUMaSMY7GYaA6gLiWdmhk=' 
WHERE 
  key_id = '51eaf9580f620612b27b56e71ecb436d198ab1f5baa6f8c11feedb3029e58814' 
  AND (
    token = '6cTzy7lM79dXjGoQInbaiOgUMaSMY7GYaA6gLiWdmhk=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )