Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8bbfad34416498342824b9ae5901a78403e1c7376f07cfb5ad639887406c1724' 
  AND token = '+u4DYY9bUz+XbsvscCWU+EubE7Hdaq8biE7DHpH8hIU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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