Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e736698872229ee06bc04b18332e9b3cb7c4a04cef73d7511c5002145c874f8f' 
  AND token = '/7kmv6JwfnEU2VDaR9Ig/mFiedUNaNWoHMGKDLwem+w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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