Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '29c4a8c0eadf655647afd9521d72d18f0da950dd25523a095366a4b50a81a681' 
  AND token = 'quhdp9Wgwh4yxNNBAEBBo1eKurcDnpJss0y3gHpJEBw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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