Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'fd77403598edfef43b25cf5271c15866010a3f478c5195efc8f92e5005579205' 
  AND token = '48e5OcseU33XbS2K++WqqdR+kfdSB0xGjPWfhZB8K/U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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