Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ee1cbc10c3cddd190c8548714193b5592ef0fc29ae3e760641c9422b0d8610de' 
  AND token = '8yAm86DCy7Fvc5X0mZt5G0oSOmBo2Tb6f81ql625RrI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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