Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9538c59e1c9dfcf671ae545a2171902ebd48af221c61373f3fd932bf00b3a35d' 
  AND token = 'vDD7U1yENrcdtRYWU7JujFT0fu0Dqk7fgCcPK074xU4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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