Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c22202c89881759fa37aaafad073ceb7aee2d242f6f9232a3cdc81c383eb0335' 
  AND token = 'tGm9fgcWIuNq2Xz0iSrMck4HKyn3EjZIgmzFH550ypM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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