Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '45e380c0d0552bf8efa05c7db07d479805c74225a11803c3dda30df7a86e87fc' 
  AND token = 'Ov/m+K0oiXhAiRm1ybR4wa47jSin3MY77NRkL08xbh8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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