Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd951a75f6387ca6e2f83bad00a438962e274bf0af59317447240b8d11a9e5b55' 
  AND token = '83ylH4hh0twWHJrrjHsAWgy0nIkyUvuM9SS1lR0uCBk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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