Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd07ab5f663ff1b462ca2eb8adccf452204b17e8bea9b8b10ecea9bf227fd93d5' 
  AND token = 'ucPemo/vMNVLThAkuLx9+jKNRd0T4SopEPkzkmBO1C4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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