Asyncio does not make your db calls or io faster, it does make your code more complex.

The only thing async io gives you is scalability of many MANY concurrent io operations. You have to either be pushing seriously large traffic or doing a lot of long running websocket/sse/long polling type requests.

The only other use case is lots of truly concurrent io within one request/response cycle. But again that is unusual, most apis have low single digit db queries that are usually dependent on one another removing any advantage of async.