Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '44e36b57fb69ee1c895480a26816f10386efad67bca3814ffbfd71e2023dac54' 
  AND token = 'Bj6S+LlEbdK65Q7I3F/46UrU27EmsSIujC+HXCjM4X0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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