Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '33906d2312002563129dc652796b1f0325b623535e3024351844f979fa5186a9' 
  AND token = 'RafeZoKvxot1fdoMl3M+JTiz8Ae53xXcVesjA6kZTOo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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