Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5aadd9def0105af0d54d7a9d4c21b774dc65997356eb7019045fe3e88de7940c' 
  AND token = 'B7iYuV1hmxsmy6QGisuwsyUD5IBa+Ey/4w4PkT2Hs04=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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