Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4a91c928d04788dc4885b6485cd35eb92d37e578f6aa40b1ef4a11d9efc9e43c' 
  AND token = 'IaIm/U/sj/GOxUrlvPHLDhHoOHjo841R+ud26EXkwrM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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