Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '334aa1fc7e5850f91d4e3735307033e8101b16697e037925e73d66ec8ae413c8' 
  AND token = 'M3j2E0ANgf5xnD7oWy2ngnRAWAOsDkPfHbAWeQaNxmw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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