Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5e7d707483d4dd9ae4ada11c9eb0569a69a79036009834909909318316ced492' 
  AND token = 'iggzMzvA8lo4IeBPkx1+agZhCgjJWaviUl3l9r4gN+4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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