Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8ddcab73aef111c13bc27067e3df3aea1ae4bf717a25df41e191c929c9d9c01f' 
  AND token = 'GfcJyu3KDq7Gn1MzCISu2l2XDxhK1RC3nLYqEyT+9DE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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