UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'xijln00bFH0Yu+wcJRMYPQt6W7m4brqMvKOySJ/sGcE=' 
WHERE 
  key_id = '50a7100a0889ad08dc3bf0ca69a29a48584f44ac15cc3aa455694d63673e12ba' 
  AND (
    token = 'xijln00bFH0Yu+wcJRMYPQt6W7m4brqMvKOySJ/sGcE=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )