SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f22080aff00479c94223c453c4c04d445d3580a36b24acc0506b4a72b5756d34' 
  AND token = 's8cq1Y3SyLOramLlNv++m3tREDbfjVCNfp2S3gIgxqI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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