Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0eef5e5c6c676065ce555ce45bc89c71ee08c0ed7b290a71bd6efbd853a7bd4e' 
  AND token = 'L8W9ni237nS81yqmc5g7jmlPHFP2aY3E9E0ZQqGZPTM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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