There’s also this ikea coffee table on wheels
. Only 64cn wide but a bit of overhang would be ok at the sides
TINGBY white, Side table on castors, 64x64 cm - IKEA
And also this longer coffee table on wheels which is the right length for a 100cm cage. The depth is narrower but again a little bit of overhang would be ok as it would be well supported with the length. It costs a bit more though
VIHALS Coffee table, white, 91x37 cm - IKEA