Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd4d9c533122cf1c1331393ed25dfcd706f642a3c77af4900b479f1ec6b303a08' 
  AND token = '0ygHwakGnGFfi4qtaHd3f6CtYLq/mwmc9sojAH8jKNI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}