SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd069c70996ad576a7e190abbb23dad8ee4f58127ac80bcfd289ff7b65b3a430e' 
  AND token = 'AsbCSxCGwLv6K4BAhjoLWF7PluKGzBEkWLWrGz8tCIg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

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