Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '833d54401c12dd6f10e57d78c7e594236ee26f5577b1d8326e13612dd2873612' 
  AND token = 'di4CezDz6r0+R8EqpMjS1eAsDuAnOSmOMDK6jzaYBeI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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