SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd6badbdab7e33f0f32394dc7d294a7a2aec038a75fb60a6d2e724efe3ba63bfb' 
  AND token = 'EWzpRJDFaj1/wb2BLGzWj+7cGH0XV+uHts1UzAjQ3fw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

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