SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '04bb1163e313e91e64f0f27095076a142299df12bb67ded66d252f96a7353b0d' 
  AND token = '/jMsEfBdoqKidy6CucNkDbXZHFHNSboVmMkhAgwVs9Y=' 
  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