Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1c733459fc66d9134d395a90025a78122499632ce8629c7c0273de82b1cd9907' 
  AND token = 'gUF68fbjANRLr8O+K9a8C5HnSiJ5PIAmKm2RcZ0W5nU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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