Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a5d731e335667889330b01058e919b12b6465a286593c00ab31115b36cd473ad' 
  AND token = 'QlEsxSuUXTdfopiI0OwFnln3yeiw4yGKJccyf/9D9jc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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