Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '113744091704e2a2d5e626768245131b99599c8be5736607611f651e5886c495' 
  AND token = 'j1jAAIu3orSVo0CJK5maWYDSZdn4xnUsaUtZa7Zw7Hk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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