Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0c5ff50a85115de69ba5aab12e693cc70d54d361e562fa58d79d047ffe580006' 
  AND token = 'Ke/5PZmaq7ZazIJYUSK8LfLJgncBjgqa6kckgxaon60=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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