Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4b089a29a4da9366ce37cb007e7f2d4c4e6c39db9e330ca0859cc72dcccd75a9' 
  AND token = 'vebjs1ZHy28KPJr+J8N8vW8cWNP8Dssm9mMQW96zAq0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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