Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0ec7e420e38bbe9812aeeb8cbd24156848ef514bc5ff41400602e054c1953031' 
  AND token = 'Aw6c6Q80yMFNgVx9fwEBBYFozp9481KyoW7lbOaPFTs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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