Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3a1300f2b6e582d31c34ed66d9d42966978abe18483e301edcfbc051fd07fab7' 
  AND token = 'ATX/epg2+Jq0EfvJHJCjAsT/U5S2v+PGw3tdebUAaUI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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