I needed the same shortcut as you and I found this solution at the moment. I've got a Logitech G11 keyboard with programmable G keys. And programmed for the one key next functions:
Ctrl+2 to select Media Pool Tab
Arrow Down to select Next Clip
Enter to open it in Monitor.
It works great for me. In one press. But you just can reassign the window selection to something more handy if haven't got ability to programme buttons as I do. Also I narrowed the media pool window so it can only fit 1 column. In this case Arrow Down always means I select Next Clip
Hope it helps) Sorry for English, It's not my native)
DR 16.2.055, Win10, Ryzen 2700X, 32Gb DDR4 3200Mhz, GTX1080, Studio 442.92, SSD (OS) + HDD 7200rpm