Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2d491dae8be8d105ab18ed795f8b51d9ef0bcb746e7449fe1329cacd88e955c7' 
  AND token = 'lfabICb0R0cW1jlQFKAFf0oGXVGTD/afzvmuSmhPaKA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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