Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1b5185ff3584eee84ad30d8865d199fc530473ed6664d0ed901558e267c53ef3' 
  AND token = 'eyhqaAJ/swZPOPepoWjzHysTAjL/LRxXVcdhF0WldTQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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