Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '24effe0d31e5c69eed7e342a7277edf751549ef2286aad1eb6f1bcc3252db943' 
  AND token = 'MrHgBcULDtuwkZCq7P2ICcWnOrMRv0wiU/1S70r0ayI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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