Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'edd82a10541290abc4d1b1c9b6f7295a59db605301c823695494eb9ab7e43667' 
  AND token = '3lWKIByR622S56p6dFxtwSotQnWgPwODCawNXeVopWo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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