Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd581f3a47ba329d941c8fd7551efe428fb6ec952d2717827c5bc1ccaebdbde79' 
  AND token = 'ed17fGWea+FwHfFIxMMkf2VHbikobomGXD/35Ef8OKc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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