SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ee08ffd8e7fc92fa51b67c3d783cd6a9010cc989c61115100e7cbdf349fe91fd' 
  AND token = 'jEodrwuDkvsXmLn+Zf4xy98NAnwRkJQhVAsqdymapMo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

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