Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '435dc8e5dac4c6bdc6868a4f4c498570cffdad79434803e2387bf5fd597a66ee' 
  AND token = 'xaWv4XTAJcb7C0PlWu+ep2JX0V57DtDwXhGfS83nOWA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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