Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '778758eead78d00fd949c2942e6def658a8f1dd8b125f9458c465370ed43ad9d' 
  AND token = 'snXRFyqOQZ3i4FOqsfr3GgHUxdGeBXLL8m95A7HUY6s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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