UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'PofNIr4s0+BpztK18/FLw/n5owgefOnvP84ejmvxnDw=' 
WHERE 
  key_id = '8bf5a8b9194bc2f3969e3b9dfe6b7158c36fa6ea8f4d609f8a89efa57171e8e7' 
  AND (
    token = 'PofNIr4s0+BpztK18/FLw/n5owgefOnvP84ejmvxnDw=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )