Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1e0665859710f2d7cef912d7dc7d8e8d004e8ecfa4400bbc21a4814d20abd21e' 
  AND token = 'qpghOtNFauCIdFDPxxeIMucWggXsQ2q0cpX8txOHFWQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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