UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 't96+vh1agMqWVOF/9us9vmp0O4p3biK6zZoGwtNVAOY=' 
WHERE 
  key_id = '2137c268f9bf3ae8cf0288579378b999eb90ad5815fed4e136e1b10bad7ac735' 
  AND (
    token = 't96+vh1agMqWVOF/9us9vmp0O4p3biK6zZoGwtNVAOY=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )