Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'be9de25b3e1a84b8064cfdc6ef8466cffb509f9284d2935a596680e86bc2ad81' 
  AND token = 'BzYRJweY63XXefQhLzUhe3xS+4t54V7/oJ4BtFVBcEA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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