Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aa67282400727ba60ab771a7524bf57f9abc2c6145f983d545531141ab0b7d47' 
  AND token = 'nm/lz0xWwU0M3hFPzAbOuqt1ucgU/KHsbI61TvJxDqM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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