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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9ad56c347cab87d513be5c766c566fe95c5217b48ad8ecc47aadc085fc5740da' 
  AND token = '596zBgC00OU8kEn54Cw3KImx8qjgThuHVao9KNYwO2E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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