Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '4a6cd8582cf1946b702ef8394fc2494ee32ea803f30438dd009cf142ce42f5c7' 
  AND token = 'kJX1fRAqabsdkWdRHkf3ATkl7qglQ8SqP5UwJxxp5Bc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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