SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '64a598fb27ae5a8d12210ffb134812a1da67b255e15cc093706ca397916b13b5' 
  AND token = 'eEzXYvabmN6e1NDz3U+2zfzGuYzr+vl6T8Rp83Wcodc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

Explain
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE Impossible WHERE noticed after reading const tables