Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1b26e43d5c08ddc8a2229071884bb90110cfacfee80657dc0e0fe905ad19ca71' 
  AND token = 'NjJng1NLUE0shk8Yrl0YLUEJqllsOqe9tSkuNqnurLs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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