UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'TU/T+G4+QVr+R1QI8uXq7H2ZuKcqQ6/LEVWm6h/76NA=' 
WHERE 
  key_id = '6951ffb4ebd0932e2ed2a677191269fea113da02ad65360457f879eb9fb09a9e' 
  AND (
    token = 'TU/T+G4+QVr+R1QI8uXq7H2ZuKcqQ6/LEVWm6h/76NA=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )