Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c79af9f5179f24c564cb343b6d39cca64eb8acc077e5ca888063b2a0bd863750' 
  AND token = '/Togk5j03yyp0hzTSrfhoJP5iYuVwVH+9CvytTzTxWs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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