Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '282a51d966cbcfce08b64fb86560f9c617e42b2d3dd91c4e73798b745431ae91' 
  AND token = 'IokWS5ZUMu9rQEfKU4J+131CHTTM8SnDmkQgqzvkza4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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