Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4e34159ebd704c0cb7bfceb89ab6f833575b63d7e39aff89c437fd9feae0b921' 
  AND token = 'TrxIFKexhTd1O8SElxw6+XEcNw8LgKR2WHc96iPtsGQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00065

JSON explain

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