Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ad60cf81041c03fcbea1d1876ad185e89cfdc019f892ed678ea8f4637dd88ca7' 
  AND token = '1r4w7iarFbu8H7hbGrd5cED69V4mWojSgRm9wyugMs8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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