UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'S5l6EYbce4sgfmbUwMhNIRnV/RSfTnykGhwODa2KnuI=' 
WHERE 
  key_id = '4c84120b27001a74854adc9d035235fc82a406e018a6fe7b91e196f74c6295a6' 
  AND (
    token = 'S5l6EYbce4sgfmbUwMhNIRnV/RSfTnykGhwODa2KnuI=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )