Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '989c307e095abaf5ff46e11b06528e86eecf9674b9ff638036b076fdc9673303' 
  AND token = 'WYtHP8Ms6zD1lUfD1mixOI5eyVyROXN8CnQjPZbA+KE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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