Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2f5745685f46acc506f735668442e2a21938b0a84d5d9eecae4472497e76453b' 
  AND token = 'wvfu/c0IhtwfK8kuyvEA6fK9ULzvvCGvv4RVuUk26os=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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