Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'abb82266184ce6758b124980369b650a675555df5dd13f37fbaaf48d76481737' 
  AND token = 'cAuUtlNOwbpFsO6sN3Z535cyXN5S88Azqcjm6b4RwCU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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