Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a490959146b9cf254b60477e42c2cf36b0fb1bdbe168059091e29e610b490bfc' 
  AND token = 'Y20EsyXzCr1thGWR+u79OoO9bp6SdK1vg2Zsm0zSE1M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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