Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dadec5f03d638aebbe844f8450364268bac2f9658653296b984c97e7b204d5fe' 
  AND token = 'S6Y4kMXsm1TfC8hRCH40v0+cG6mwEHaigmoIBoCVVfU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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