Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2251b3544c9a9804f74e67f3b0d6fa5b6177e3aa0b2719b62f8475a6ecda544f' 
  AND token = 'wO2HoMb2e/d9mAquXZx5y1jkX3DH5AQg5FWgCU04PNg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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