Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1e09fd083ba5c58a3d12e2e4bc86ca1020a8f50866c644dc34be33f42282374d' 
  AND token = 'OiD5ztURouN965Uw1QhmfpMWP4Qn/wR27W1yp2wFiHw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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