Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2eba006f7614df30a248f01e42800639adf9ba39110f16110e05b4f05dca1f3f' 
  AND token = 'hgmhTG5s5rBhSfCEybZa2PDxvCAJNMy2L2p5eBdnUmI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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