Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'db795043ac14b4dd3bca70afada5239924172709f4b3db1410e0e07ba3200d11' 
  AND token = 'XQ9xDXfh36bu0PePMjYD6P5G2hEv+QAiyu9KuGdr5lk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00071

JSON explain

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