Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3395048bbe424afffedd7efa1a8a0bc0d9462666d5a05f3c3caf462091bb7e63' 
  AND token = 'RXGf4CuNOy08UJprJNQJg51ilrZmeJ5PfnFsMw0xo0s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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