Must the feeding be done now instead of the money that was paid as a minor expiation years ago, and will the money paid be considered charity if the feeding is done now?

The expiation for an oath is one of three options, given as a choice: feeding ten poor persons, or clothing them, or freeing a believing slave. Whoever is unable to do any of these should fast for three days. It is not permissible to pay the monetary value according to the majority of scholars, but it is sufficient for one who has paid it with the intention of expiation, as Abu Hanifa and Ibn Taymiyyah permitted it out of necessity and for the sake of benefit.