SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4c477c76f8e35a11fd99b2908a3b001cab60e5075e46101bdd59e4f11dbe2e8e' 
  AND token = 'YpR9YIWWKPE+QDxrgLB0ahFYk0NCyDFaPHCaLbp4ZkY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

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