Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8d65d40400c7a0d2d9b3d57ce368a2b42ec65bfefba182259e435c19127fa487' 
  AND token = 'J0H0k6r9sOwXagBeJ1+E68QWGAM1T9WBpIgu4liZDl8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}