Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '24677e54292c2ecc28a016737756928e4d2160108ead7553a5810bfc4f2f6a6f' 
  AND token = 'fXfi6S25qTZMgrW6INo0qehuJw4HJ3qSMGX/owMwWSk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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