Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7ae68687dd2217dc8fdae72909cc7fd209f0028e02e0e9e05417d17244e20acd' 
  AND token = 'v1U9XkjR75Y8an0cUOPGf/gOT8qWtp1/4O0hszGPNzs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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