Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ad559c275ffe38e10073abaa45b88ce84f03041d16eecb563421c831a70fd037' 
  AND token = 'WvpJY0x8EAS7h8HACJiPkS2OifKjTx1UsVcnNNmWkLo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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