Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2f4fdba732f2b3115dfba9745d8baac145ff1cd92af4d6c28d647b5db07d9af6' 
  AND token = 'vy+PeC5eefZBUrTkkYq3YHU05tiMIHyXU6hKcAIZTUU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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