The key is in Binary Code

01110100 01101000 01100101 00100000 01101011 01100101 01111001 00100000 01101001 01110011

Character Breakdown

CharBinaryASCII
t01110100116
h01101000104
e01100101101
0010000032
k01101011107
e01100101101
y01111001121
0010000032
i01101001105
s01110011115