UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'QxdpMBXShSGfEAvrl9GsVdR+HvP5dCLC5x1aLICAdig=' 
WHERE 
  key_id = '68c3eef36e98dc661909c6ba532b3b43d2ac4e9a5a3916337f5f5adf248f1bd5' 
  AND (
    token = 'QxdpMBXShSGfEAvrl9GsVdR+HvP5dCLC5x1aLICAdig=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )