UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'gRs2c6MzxYAjYIgpN9ITc/hbCCJquYwUR46NtmAsCus=' 
WHERE 
  key_id = '938a21a4c3401e5914cb2fc728e578675bc575c0de86baaa2c5c202d2aaffad5' 
  AND (
    token = 'gRs2c6MzxYAjYIgpN9ITc/hbCCJquYwUR46NtmAsCus=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )