Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6308c7ab0b2acaa631c737ed242220ee4ff90b673502f4b2b76062e712471fe7' 
  AND token = 'mO1BdNgWJj4MEsILjUfnILfEO0wq5xRyVBukaU4MiEA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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