Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '47061fbbe5b0720b8c18a1e7e752716dd7894ccf5e9de946aeeff1adafef41e3' 
  AND token = 'UeAv3RvLvE4AeQlo9beP9WIZazsptrd6BRym3pRb99I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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