Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '34f4e46948545fc36f6f5e4bb3e9acfff688852f0cae3f44e5384c300b27943f' 
  AND token = '/oQLOy2tZIQLllFXbpqyx5tiwjVVJ07TYKbk3irPTb0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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