Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '074d04a932dae3bdccd0b236c77ef13d6a9d04a0cf5e77ae20a4d6910eb82564' 
  AND token = 'tNLedThxjTxEG0Ga/f/+NbPDHfsWf1lYSFANlRARW/0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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