Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ee3496aebe2178ae20163a3c859527873fa39f1d5117dedace4be36ad5b06075' 
  AND token = 'XQpNnk4xrLPZuCRtFymQ3ZC7IbD/V74O5H2lJV4myNs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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