Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '23a8551a9f70d2cc3327683e850b4dccb26ab1c739ec87f94ba33d4730627c9c' 
  AND token = 'ineRvUKGwRMCeFjqab9Hq5owtp2GPJq5buECSMl8FRA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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