Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '69089413e803a2f4e06f4010da79cc3600e70060e7464a442cdf576ede595f6f' 
  AND token = 'ahoRn+aTrv6WJYoGDEzWD9ZcBdWIdvhUs0G42ZJB6+8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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