Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '08f759c19ad65658bf15077ede194b54d08979463f3a93baabee7f8040159ae3' 
  AND token = 'bZWPhS503PIyBwcn4zL6xspoplronhNyiM/qilLtdmM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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