Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '4a774331ff519d77dc73eb3fef74c30228ebe59069b9bcfcf1079718028fe930' 
  AND token = 'MWq9ffjHIgZyb4KkWL60vQ6510iTyS0hDkkyKqADjvA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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