SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '05f1ac2fdaa7f5e9dc9be797ff103b1f0d40c3c0f7c4bd0e94f00cabf79aa3be' 
  AND token = '60v/MItSTKxLhzpNj+0QUBrEmIJSCNi3Qj8tkEUu3e4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00009

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