Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3b3f5f5b89a5b4eaa96afd1e66986785d55aef5448d37123781a8fc99a4fdc97' 
  AND token = 'expzlapKQp3J3l7r9b6waoeiESEpDwLQm5ZzSHu0E+c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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