godot/editor/icons/KeySelected.svg

<svg xmlns="http://www.w3.org/2000/svg" width="10" height="10"><rect width="7.5" height="7.5" x="1.25" y="1.25" fill="#5fb2ff" ry="1" transform="rotate(45 5 5)"/><rect width="4.2" height="4.2" x="2.9" y="2.9" fill="#003e7a" ry=".5" transform="rotate(45 5 5)"/></svg>