Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '54254cc6d9d3416efbce363ed3f697a78e0954d1fc872e03ce9c907ee4c8db90' 
  AND token = '362pNYxZrFt7+VzsdLcYy3aaEp7RUEKspqOtCwc/o6Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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