Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5190a9ae4cdc5a3eec61ae8647ae35333464b7d7809e01ac103481d16df9970f' 
  AND token = 'voDy6SGu3xZ4O2gHulIX2UUaoEo2etevRBJ2QYIEiNk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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