SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1be5280192da8aa7d08a9613a5c7d95ccb010b162092a11b24ae6eec091ea00a' 
  AND token = 'O8kPCqS0+GznWK/duFywfE/xtjvUvx7LL/pJwnlsU7E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

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