Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '286036bbd0c565a9151bc3694628bd93498eae367f6b3dabf9978990e2955fcf' 
  AND token = 'Cd9P+EEcUuv4pzKdreTEC8RtgLCSXSJhqh5obchNSVs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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