Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0db92f4c58b225fef42c5ae3669ebe09e1a0b1a356517ca56e84e514765e8120' 
  AND token = 'PYJqT7xMKvurgH4QySTmJhmhdo8RJkP6lSrb8rDk6y4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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