Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8f1d5ec0833e881ec1fa059cb1bfd73493065357b238709b04e1f5d12f287378' 
  AND token = 'v0uX7l2tcBv4fdHVa5o0qiKG0Hg0eG5Jdd/R00PnVw4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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