Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '89192a980d9ab4672680a063985ecb69b480254eeef3efcea99a85004b4e2d38' 
  AND token = 'yNgOGfpJz/MPRFR9cb0fXeU8d65KRjwJACBCT39Vo5I=' 
  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"
    }
  }
}