Not a MSX,Pioneer made only 2 models (MSX 1),PX7 and PX-V60
By the way,no MSX logo on it
It could be a computer used for some laserdisc made by ... Pioneer and called Videodisc Controller
The keyboard is the same than Mitsubishi ML-G3, ML-G30, ML-G30MkII family. Good to know as spare part... Maybe the Sony keyboards made for video titlers like this are also compatible with MSX.
A pity that this hardware is more expensive than the ML-G3 itself
Indeed it's a videocontroller; but it's also pretty amazing that it has (presumably) two joysticks ports and a cartridge slot. Sadly, the photo doesn't have enough resolution to see clearly what's going on inside.