Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0967f9aa69992da9907879dd9cfd3613e7cbc52b020e88f7f9452cfab110956f' 
  AND token = 'wt1cJuGrzTG05Dw/bcfkiEUXEVkXZ/dyATxH65i/av8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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