Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '98e8f9e601d6dd1d91f91de8acce8acbf4595ba315c0a7bb29156b1240986aea' 
  AND token = 'JXqCKQZmF2eFFlQky/gPAN4+A7z3gyILJeG7Vzab8tI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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