Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'eb4633f0d8aecd5f43de49cd04d189921cde532f2701e43a6b75adebec63a54a' 
  AND token = 'T4GtzAzSsbxg8V+aCwtL5zPN9O4Z9z7vMyyq1baLeDM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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