Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '28137763eba35cd5421527d736f8feb1e35db6977b981fdf618892c9ed95095d' 
  AND token = 'hi50XTHPiOQF/MgwwkYbmCTVd2DpAYv7dlxHQWxDuv8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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