Understanding the parameters of a problem is the first step in turning a weakness in your game into a strength so let’s define what we mean by tight lie. My definition of a tight lie is when the golf ball is sitting with an eighth of an inch or less space beneath it on a surface so firm you can’t take a normal divot.
To begin grip down very slightly on a low-loft club (in the photo I’m using a 6-iron). This effectively raises the bottom of your swing arc. Center the ball in your stance with your hands just in front of it at address.
If you swing down hard enough the force of impact—coupled with the eventual squaring of the face—will pop the ball up and out. Don’t even think about finishing your swing—leave the club buried in the sand.