Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a111d47b08bf2c2728bfc2e5916307aee113b98067e21c135a52ccdc61bbc645' 
  AND token = '4CtytpyTYzZlrsFy9wsifKAPZ+TpO7g4/Km2c3jT/Yg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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