SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '80bced66b417febc7ac1fe7034ceccdfce6aebad42506bdafa6ca962deded09f' 
  AND token = 'h9oAeDEnsOdT5tKZyCG6z2rrTl/QiOQtCA3ndDyjLwI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

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