Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bbb00eadd46906d60303706347e241cdb2b836710e6f439919951ab5dad19a78' 
  AND token = 'GRUoUE0KLLNHURCAa4n9NeUtrDlgHsFUAUkYbfbHdSs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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