UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'MT0Hb5PXUqcFphrfhVi6riXau7E0E5HbPMpG7CksI3Q=' 
WHERE 
  key_id = '81be1e24208521d3ffb2fc16d2b44f5daf454a102b66aa1be54f6f908c955f6a' 
  AND (
    token = 'MT0Hb5PXUqcFphrfhVi6riXau7E0E5HbPMpG7CksI3Q=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )