Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7a1179999d260bfbe421c0a924166e1f93bbcc1af98a809829908dcdf209c223' 
  AND token = 'YnD3/jcqXxL5ZvqlFRdQpTwzOWagw6uD0sbFlwSwNEc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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