Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cc1a6e1e85ebda25c829bdb6d48509e39f588ea718002ae83f481c729445f508' 
  AND token = 'OXog8eWLgkHiiEorfpjuaFWB3WkDQSiwVfAZHiUg9pg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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