Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '067ca61d14fdbfdbbf759e0f506e41f383a1c8a98b2c0c748436f7f8d000733b' 
  AND token = 'ZcsWXG2e/a2KKpcfXlznFdDh+5Dhz/Cpa67kCp6OhiU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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