Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '902db9a0f10be3f35a1e771152690bf98ed18ff129022ff303f6846c4ce144d5' 
  AND token = 'aLyw0r1fRpEW/z1x1BAk+OriYcnSccqT3mC4tO6XBLI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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