Check out Lock 21 Low-poly 3D model on CGTrader for $2.99. High-quality mesh by TF3D: 925 polys, 1016 vertices. PBR, Textured, UV Mapped.
OBJ (OBJ, filesize: 113 KB), PNG (PNG, filesize: 38.1 MB), FBX (Autodesk FBX, filesize: 65.4 KB), BLEND (Blender, filesize: 1010 KB)