The whole point of a no KYC crypto exchange is that you do not create an account or upload any documents, you just pick the pair and send your coins to the generated address. There is one of those platforms right here https://godex.io/ . Rates are locked at the moment of the swap, so you do not have to worry about the price slipping while the transaction confirms. Just make sure you double-check the receiving wallet address before sending anything, because without an account there is no support ticket that recovers coins sent to the wrong chain.

Check the network fee before confirming the swap, on some pairs the gas eats a noticeable chunk of a small trade. Swapping a tiny amount makes no sense if the fee is a third of what you are moving.