Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '72d9bca4fd5195255e2fe7b1f88ea4ed8d5a6085e1ff078f90fb254bfa8fa4fa' 
  AND token = 'FHpNZliGW2ddMonm1S3KQ7NmJDlKQbYD4J1ZGxImkZw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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