Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '882fda56f3a6a1c187dfa9c2a01717ba084e52a57574b72a29f0ae80dd5f4df4' 
  AND token = 'oWbDEho1Yw4tdObaPtWNZlH4BOi+95cwYZn8k8NtwuI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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