Western Union can send $5 to Ghana. They'll charge you a dollar. I can't speak to the actual speed, but they claim minutes, and the recipient gets to pick up their money in cash from their nearest affiliated agent. WU has a pretty extensive network.

https://www.westernunion.com/us/en/send-money/app/start?SrcC...

If not WU, there's probably some other remittance company operating in their area. The fees might be pretty exorbitant though, especially for small amounts.