Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1c3b511b53113d4183ba08b52b23c5438fffdf11b9aa1035acf7eb3594b50bfc' 
  AND token = 'aev2iJpfzXwCZ778Jn3TX01JwH1qNryF//tH7/CPB3w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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