Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '162617dcc6c9fd984da97ac68e3c693f177ae6c2bf74a7904244805926943baf' 
  AND token = 'HCiENFKf+19bu9r3M3hEqVAqGHBq5YKSN3fapHyhi4E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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