Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '62ba5ca00e779ac2473ee883cb534cb722ce3630a5134dbe962e3d60d39ef244' 
  AND token = 'LE4Vxe6qCdqdlFzYc404TRnCdEdpydRb8h3U2nohrXk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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