Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '33bfbb841f870370f80ccf9a00940b1bba6a3ae322aa55de63425df9ce086fda' 
  AND token = 'zz+Ab1o7rFAFZ5KB0CyZa1UJK9xOeZHR6LXY9KaHuF4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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