UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'RKhazGqu0wNnYX5DOPcds128YTXNTNs6Mod38EONNuU=' 
WHERE 
  key_id = 'a8d991a23213ade7813a7a4dda385dc974f12e568a39337eafd2caedc4515f33' 
  AND (
    token = 'RKhazGqu0wNnYX5DOPcds128YTXNTNs6Mod38EONNuU=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )