Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dedb342e246bfdee8fb1e8e2a26c6458f4bc74e654f8ae91fe3d2d76a9cfd54f' 
  AND token = 'WM1e1aEeJO8FSSAF8mvNFQh4Loe27Cwpaa6kfIxND8g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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