Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '807660d2fd8b37a2e392b42c7551f8145f0d025e1a742dbfb4558508040fa8a0' 
  AND token = 'fKOfBS6OOxATg44Y7eaWHn58x3KPX33mYh2vhrz+lWk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}