Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a84c9f77fb52bbefbfd87bf5caeb48329c78e5750906bb0a54fc403354eae95f' 
  AND token = 'ykNx4HyI1qW2saT/FqeAL26okNHqFjY46+LdHfUyHuo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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