ISO 12233 Resolution Chart sample crops have been added to the Canon EF 40mm f/2.8 STM Pancake Lens Review page.
These results would be quite good for a lens at any price, but they are very impressive for a tiny $200.00 lens.
The Canon EF 40mm f/2.8 STM Pancake Lens is in stock at B&H, Adorama and Amazon.