UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'Si5o8N5Mjq25FWTocCHmTTf71hGs0mMJCzJ8NU1Gn+g=' 
WHERE 
  key_id = '839f0c18e83e3f085d50d38e14fb67ca998436a0fa780589490b69db2bcf0e29' 
  AND (
    token = 'Si5o8N5Mjq25FWTocCHmTTf71hGs0mMJCzJ8NU1Gn+g=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )