Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9f0fc6e8585f17786dc15ef10b72c65a7a1a89e891bb406fb39d8677346c4d9b' 
  AND token = 'qziQtRj7O/IWSwc5k+jqW8oXsMNUnctDpG8DoAI+wek=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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