Delegated payment is not a question of whether a token exists.

It is a question of whether a specific payment request is still inside the buyer’s delegated authority at the exact moment the platform executes it.

That distinction matters.

A token, signed message, mandate reference, payment artifact, or protocol payload may be valid as data. It may have a valid signature. It may not be expired. It may have been issued by a trusted party. But the commerce platform still has to answer a narrower question:

May this actor request this payment action for this buyer, merchant, checkout snapshot, amount, currency, and time window?