Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4b895bbff85c595ef4ffeb6eb488938047b919137312f1a3446f6478da1c96c1' 
  AND token = 'mhAOT7aj5xLqRS9aDO6LZXuOhq5ggcNuTap6AOmjhjw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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