White wins this position by creating a passed pawn on the Kingside.
Note that if the Black pawn would be on d3 instead of c3, the game would be a theoretical draw.
Copy the FEN position 4k3/1pp2ppp/p1p5/8/4P3/8/PPP2PPP/4K3 w – – 0 0 and play this position against an engine.
NOTE: There was an issue with the original post. There was a missing White pawn on d4. The diagram and the FEN diagram have been updated.
