Water spillage

Hi- last night I spilled some water with a drop of old juice on my MacBook Pro keyboard- it wasn’t a big spill and it only got on the right side of the keyboard. I got a towel and dried everything off there was some water still in the keys and I got some out but I turned it off a little while later and turned it upside down and letting it dry over night with a towel underneath it. It still worked even after I spilled it and was doing fine. Should I be concerned? It still works and everything?