Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'b96694b10f983e2454a7d961478abbd6ce2eef510e4508816a8cf0876db44cd5' 
  AND token = 'myXgJZ25aHljQNend7rDj6l4GPFoYLc0d0j4rBIKddA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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