Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a7787684c111bc6b39f4ae99aef0885f22e63d3d4606d4c8b1f8c58757635413' 
  AND token = '0gtt/1CFu+C7WE6dqXWprp1E5eOPBcB/snKTiRKkBiE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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