Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '06ea5c6992ffc3a7e02cdbab9c077be3083a2252673cc49401e3c8f55a4b6c20' 
  AND token = '/S0b5TgD6+J/x3lYwSRzgNOTFVFnYa+ytdi1fi3LpGM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}