INSERT INTO cscart_lock_keys (key_id, token, expiry_at) 
VALUES 
  (
    '21ef346c695c50c56d10d9568a9eb50f0946f3b6db9634414f101d0251402dcd', 
    'f7XAo6IPOJt+2vFxsenpBjKjiw4Uo3xRlQf9R7kBwb0=', 
    UNIX_TIMESTAMP(NOW()) + 300
  )

Query time 0.00027

Result

int(1)