Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '9468df4858e20ae15ab38a12b56cac6e5be20495fb1cd1ce57323b27b56e5dbe' 
  AND token = 'OuP5tfMTcj0mvYPT15JqFj/D3zZoeT1ped0kuefHHnw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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