Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8890169b5bb76aa9739f0b9c006dd5ce468daabac61741bf7375b7f5a62acba7' 
  AND token = 'bNH0iNevCHll1j52/RELXRtMWH/2SiT9xvl28QuFbLE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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